"Pre-loading is definitely a big problem for us with events like this. We want to ask that people moderate themselves, it's a long day, there is no need to start drinking too early in the morning.
"If we see people who are obviously under the influence they will be going home. There will be a real emphasis on pedestrians coming in."
Mr Formosa said the temporary liquor ban was in place to eliminate people drinking as they made their way to the venue and would stop punters "sculling" beverages before entering the gates.
"We are just saying to people that it's a long, hot day, they are going to be out in the sun, instead of drinking only alcohol they could have a water in between.
"They can travel in groups for their own safety and have a designated sober driver. We want everyone to have a good time, it's a great event but we want people to be sensible, that means having a plan in place before they go."
Police have worked closely with Hawke's Bay Racing and the Hastings District Council in the lead-up in order to make sure everything runs smoothly.
"Now it's up to people to behave."
As always Hawke's Bay Racing has measures in place to ensure a drama free day out.
Designated alcohol free areas would cater to families, while identification check points at each of the bars would prevent under age drinking.
"It's a licensed event so people need to be of a legal age to participate in alcohol," HB Racing general manager Jason Fleming said. "We have got strong stance on pre-loaders; there is also a restriction on the number of drinks a person can buy at one time, that's part of the liquor licensing criteria."
Anyone caught drinking in the liquor ban area will be "in police hands".
Free water is available from any of the bars so people can rehydrate between beverages, and they are encouraged to remember a hat and sunscreen.
"It's supposed to be warm with no wind, so it should be a fantastic day."
Turks bar owner Alex Kersjes, who is sponsoring this year's event, said people should pace themselves for the long haul.
